Answer:
C. 23%
Step-by-step explanation:
C. The probability that the student takes Spanish or French is 23%
What is mutually exclusive events ?
If two events can not occur together at same time, then the events are called mutually exclusive.
If two events are mutually exclusive, then,
P(A∪B) = P(A)+P(B)
And If two events are not mutually exclusive, then,
P(A∪B) = P(A)+P(B)-P(A∩B)
What is the required probability ?In central high school,
15% of the students take Spanish language = P(A) (say)
12% of the students take French language = P(B) (say)
& 4% of the students take both the languages = P(A∩B)
Since some of students take both languages, so this is not mutually exclusive.
The probability that the student takes Spanish or French is P(A∪B).
∴ P(A∪B) = P(A)+P(B)-P(A∩B)
= 15%+12%-4%
= [tex]\frac{15}{100}+\frac{12}{100}-\frac{4}{100}[/tex]
= [tex]\frac{15+12-4}{100}[/tex]
= [tex]\frac{23}{100}[/tex] = 23%
Hence, Required probability is 23%
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which choice is equivalent to the product below when x>0
Answer:
sqrt(6x^2+18x)
Step-by-step explanation:
sqrt(6x) * sqrt(x+3)
We know sqrt(a)sqrt(b) = sqrt(ab)
sqrt(6x * (x+3))
sqrt(6x^2+18x)
Answer:
[tex]\text{B. } \sqrt{6x^2+18x}[/tex]
Step-by-step explanation:
[tex]\sqrt{6x}\sqrt{x+3}[/tex]
[tex]\sqrt{6x(x+3)}[/tex]
[tex]\sqrt{6x^2+18x}[/tex]
simplify 9r - 5t + 3r - 7t
Answer:
12(r-t)
Step-by-step explanation:
12r - 12 t
we take 12 comman factor
Answer only. What is the greatest possible sum of the digits of a six-digit number that is a multiple of 2, 3, 4, 5, 6, 7, 8, 9, 10 and 11?
Answer: 36
The LCM of 2, 3, 4, 5, 6, 7, 8, 9, 10 and 11 is 2 × 3 × 2 × 5 × 7 × 2 × 3 × 11 = 27720.
A multiple of 27720 will end in 0, and the sum of its digits will be a multiple of 9.
The largest 6-digit number which is multiple of 9 with last digit of 0 is 999990, and the sum of its digits is 45. 45 is not a multiple of 27720, and there is no other way to get a digit sum of 45.
We now look at the next biggest multiple of 9, 9 × 4
= 36.
The largest 6-digit multiple of 27720 is 27720 × 36 = 997920, and the sum of its digits is 36.
If you spun the spinner 1 time, what is the probability it would land on a white piece? Put your answer in fraction form.
Answer:
4/7
Step-by-step explanation: Since there are 7 possible outcomes because there are 7 triangles the denominator will be 7. Since there are 4 white squares the chances of landing on one is 4/7
I need help on this.
Answer:
Option 4
Step-by-step explanation:
Thank me later
Answer:
three hundred fourteen thousandths3 x (1/10) + 14 x (1/1000)Step-by-step explanation:
In written form:
three hundred fourteen thousandths
In standard form:
0.314
In expanded form:
3 x (1/10) + 14 x (1/1000)
3 x (1/10) = .3
14 x (1/1000) = .014
.3 + .014 = .314
Therefore, these are the two correct answer choices.
will give brainliest plz helpp!!!
There is two parts part a and part B please answer both Thank you
Answer:
The answer too your question is C. to your first part
To the second part D. is one of the answers so is E.,
Step-by-step explanation:
It is C. because there are three ones, one 4, one 3, and one 2. that is the explanation too the first part.
will mark bianleast plz i really did this
What is the scale factor for the similar figures?
1/6
1/3
2/3
3
Answer:
1/3
Step-by-step explanation:
Scale factor = 4/12 = 1/3
Please answer the attachment below Correctly
Step-by-step explanation:
Find the cost of one part and then multiply that number by 9
An equation of the line of best fit for a data set is y=0.54x+3.04. Describe what happens to the line of best fit when each y-value in the data set is doubled.
Answer:
The slope decreases and the y-intercept decreases.
Explanation:
Red is original, blue is when y is doubled.
Suppose that the mean number of chocolate chips in 30 cookies is 19 chocolate chips. Explain what this means.
Answer: It means that there are 570 chocolate chips in all the 30 cookies
Step-by-step explanation:
The mean also referred to as the average of a data set is calculated by adding all numbers in a data set and dividing by number of values in the set.
Since the mean number of chocolate chips in 30 cookies is 19 chocolate chips, this means that there are:
= (30 × 19) = 570 chocolate chips in the cookies.
What is the perimeter of the triangle?. I need help with this pretty please
Answer:
132
Step-by-step explanation:
13x2= 26 26+18 = 44
44x3=132
Mike can plow a field in 12 hours and his brother Phil can plow it in 15 hours. How long will it take them to plow it if they use two plows and work together?
Answer:
6.66 hours, that is, 6 hours and 40 minutes.
Step-by-step explanation:
If Mike can plow a field in 12 hours, we plows 1/12 of the field each hour.
If Phil can plow a field in 15 hours, we plows 1/15 of the field each hour.
So if they are working together, they can plow (1/12) + (1/15) of the field each hour, that is:
(1/12) + (1/15) = (5 + 4) / 60 = 9 / 60 = 3 / 20 = 1 / 6.66
So if they work together, they can plow the field in 6.66 hours, that is, 6 hours and 40 minutes.
The regular price of a pair of glasses is $90. The glasses are on sale for a discount price of $76.50 What is the percent of the discount ?
Answer:
15%
Step-by-step explanation:
[tex]\frac{76.50}{90}=\frac{x}{100}[/tex] Set up a proportion.
[tex]90x=7,650[/tex] Cross-multiply.
[tex]x=85[/tex] Divide both sides by 90.
[tex]100-85=15[/tex] The discounted price is 85% of the regular price so the
discount is 15%.
I need help to solve this proportion
Answer:
5
Step-by-step explanation:
cross multiply
isolate x
12x=7.5(8)
12x=60
12x/12=60/12
5 is the answer
James's T-shirt business uses the demand function P= -Q+31 and the
supply function P= Q- 17. According to these functions, what will the
equilibrium point (P, Q) be for James's T-shirt business?
Answer:
Step-by-step explanation:
7,24
What is the mean absolute deviation (MAD) for the 2nd bowler? Round to the nearest tenth.
Answer:
8.49
Step-by-step explanation:
8 + .49 = 8.49 :)
The totalnumber of combinations are ______.
Answer:
b.
Step-by-step explanation:
Answer:
b) 75
Step-by-step explanation:
The totalnumber of combinations are: 5×3×5 = 75
You have 5 choices for a drink and for each drink you have 3 choice for a sandwich and for each chosen sandwich you have 5 choices for a side.
a combination is :
( drink , sandwich, side )
5 × 3 × 5
Help me please!!!! Thank you
Answer:
[tex]ange a is 5[/tex]
angle b is 20
Answer:
angle a is 40
angle b is 20
amgle c is 120
Step-by-step explanation:
Help!!! I need to get help asap
Answer:
C
Step-by-step explanation:
Because the x line is for degrees C and the y is for Degrees F and the y intercept is where C is at 0 and F is at 32 making it the temp in F when C is at 0 degrees
I need help on this.
Answer
He made a mistake on the First step I think
Step-by-step explanation:
1st one
Answer:
First mistake appears in First Step
Step-by-step explanation:
First mistake appears in First Step, within the parenthesis need to solve division first.
2 + 5 x (4 + 18 ÷ 6)
Step 1 should be 18 ÷ 6
2 + 5 x ( 4 + 3 )
Step 2 is 4 + 3
2 + 5 x 7
Step 3 is 5 x 7
2 + 35
Step 4 is 2 + 35
Answer 37
Find the domain of the function.
y = 5[tex]\sqrt{x}[/tex]
Answer:
[0, infinity)
Step-by-step explanation:
The domain is including all numbers from 0 to infinity.
The reason negative numbers are not included is because of the [tex]\sqrt{x}[/tex]. A negative number cannot be included there, otherwise it would be what's called an "imaginary number" (i).
Therefore, every number besides negative numbers are included in the domain.
Fran brings home $225 per week working 15 hours of which she is able to save $40. Fran wants to have $1,400 saved at the end of 20 weeks. She may work up to 18 hours per week if she wants. She can save all of the money earned working the extra hours. Which of the following statements is true? a. Fran must work at least 15 hours per week to meet her goal. b. Fran must work at least 17 hours per week to meet her goal. c. Fran must work at least 18 hours per week to meet her goal. d. Fran will not be able to reach her goal.
Answer:
b
Step-by-step explanation:
The correct answer for the given problem above would be option B.
⇒ Fran must work 17 hours per week to meet her goal.
What is an expression?Mathematical expression is defined as the collection of the numbers variables and functions by using operations like addition, subtraction, multiplication, and division.
Now, According to the given details,
Fran works 15 hours per week for $225 which makes it $15 per hour.
Hence, If she adds another 2 hours per week to make it 17 hours,
Then, she will earn $255 dollars per week.
Now, since she is saving $40 dollars plus the two hours which is $30, a total of $70 per week of savings, multiplied by 20 weeks, then, she will be able to get $1,400.
Hence, The correct answer for the given problem above would be option B.
⇒ Fran must work 17 hours per week to meet her goal.
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Rename 3/4 and 9/10 using the least common denominator.
Answer:
15/20 and 18/20
Step-by-step explanation:
Least common denomintor of 3/4 and 9/10 = least common multiple of 4 and 10
multiples of 4: 4, 8, 12, 16, 20
multiples of 10: 10, 20
Least common denominator = 20
Rewrite fractions: 15/20 and 18/20
3/4 and 9/10 using the least common denominator is 15/20 and 18/20.
What is LCM?LCM of two or more than two given numbers is the smallest common multiple that is divisible by two or more than two given numbers.
Given, are two fractions 3/4 and 9/10 we know the LCM of 4 and 10 is 20.
∴ (3×5)/(4×5) and (9×2)/(10×2). (we have to multiply same constant to the
fraction to retain it's original value).
So, 3/4 and 9/10 using the least common denominator is 15/20 and 18/20.
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Lines m and n are parallel. Parallel lines m and n are cut by transversals s and t. Clockwise from top left, the angles formed by m and t are blank, blank, (5 x minus 1) degrees, blank; formed by m and s are blank, (9 x + 2) degrees, blank, 1; formed by n, s, and t are blank, 2, 74 degrees, blank, blank, blank. What is Measure of angle 2? 39 degrees 57 degrees 67 degrees 74 degrees
Answer:
67
Step-by-step explanation:
Answer:
67
Step-by-step explanation:
My question is a complex numbers question: square root -6 times square root -24 the answer is -12, but I don't know how to solve it
Answer:
see below
Step-by-step explanation:
sqrt( -6) * sqrt(-24)
We know that sqrt(a b) = sqrt(a) sqrt(b)
sqrt(6) sqrt(-1) * sqrt(24) sqrt(-1)
We know that sqrt(-1) = i
sqrt(6) i * sqrt(24) i
We know that sqrt(a) sqrt(b) = sqrt(ab)
sqrt(6*24) i*i
sqrt(144) i^2
12 i^2
We know that i^2 = -1
12 (-1)
-12
7/8 of my money is £4.90. What is 5/8 of it?
AWARDING BRANLIEST TO WHOEVER CAN ANSWER!!
Answer:
£3.50
Step-by-step explanation:
£4.90 = 7/8
£4.90/(7/8) = £5.60 (Total Amount of Money)
£5.60 x (5/8) = £3.50
Answer:
£3.50
Step-by-step explanation:
[tex]\frac{7}{8}[/tex] = £4.90
(÷7) (÷7)
[tex]\frac{1}{8}[/tex] = £0.70
(×5) (×5)
[tex]\frac{5}{8}[/tex] = £3.50
I hope this helps <3
What is the earned income credit (EIC)?
А. a nonrefundable tax credit designed for those who pay for dependent care while at work
B.a refundable tax credit designed for those who pay for dependent care while at work
C. a nonrefundable tax credit designed for those with low to moderate income from working
D. a refundable tax credit designed for those with low to moderate income from working
Answer:
D
Step-by-step explanation:
The United States federal earned income tax credit or earned income credit is a refundable tax credit for low- to moderate-income working individuals and couples, particularly those with children.
Please help with this
Answer:
Is D
Step-by-step explanation:
Because is moving four times right and four times down.
sqrtx^2+6x+9 if x≥3
please help quick idk how to do this at all
Answer:
x+3
Step-by-step explanation:
sqrt(x^2+6x+9)
factor
We know this is a perfect square trinomial
sqrt(( x+3)^2)
Taking the square root of a square
x+3
2) Trisha owns 25 shares of a common stock in a pharmaceutical company. Last month the price of the stock was $35.48 per share. Today, the price of the stock is $27.36. By how much did the value of the stock decrease? Enter your answers as a number like 105.
Answer: 77 percent
Step-by-step explanation:
The value of the stock decrease by 23.13%.
What is Percent Decrease?The difference between starting and final numbers is the percentage drop. It displays a percentage loss of value compared to the original regardless of the units. The difference between the initial and final amounts is the amount of decline.
Given:
The price of the stock was $35.48.
Then The price of the stock is $27.36.
So, the decrease in amount= 35.48 - 27.36 = 8.12
Then, percent decrease
= 8.12/ 35.48 x 100
= 23.13%
Hence, the percent decrease is 23.13%.
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